77219293492 has 12 divisors (see below), whose sum is σ = 147418651296. Its totient is φ = 35099678840.

The previous prime is 77219293433. The next prime is 77219293507. The reversal of 77219293492 is 29439291277.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 877491928 + ... + 877492015.

It is an arithmetic number, because the mean of its divisors is an integer number (12284887608).

Almost surely, 2^77219293492 is an apocalyptic number.

It is an amenable number.

77219293492 is a deficient number, since it is larger than the sum of its proper divisors (70199357804).

77219293492 is a wasteful number, since it uses less digits than its factorization.

77219293492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1754983958 (or 1754983956 counting only the distinct ones).

The product of its digits is 3429216, while the sum is 55.

The spelling of 77219293492 in words is "seventy-seven billion, two hundred nineteen million, two hundred ninety-three thousand, four hundred ninety-two".